Which colored hydrant signifies a flow rate of 1000 to 1500 GPM?

The color green for fire hydrants signifies a flow rate of 1000 to 1500 gallons per minute (GPM). This standardized color coding helps firefighters quickly assess water availability at a given hydrant during an emergency. The green color indicates a substantial flow rate that is typically suitable for a wide range of fire-fighting operations, allowing crews to effectively combat fires in various structures and situations.

In fire response scenarios, knowing the flow rate is critical for firefighting planning and tactics. Green hydrants are considered to provide ample water for most firefighting needs, slightly below those marked in blue, which indicates flow rates above 1500 GPM, and above the lower rates represented by orange and red hydrants, where flow capabilities are more limited.